Improvement in wheat-steaming apparatus



UNITED STATEs EDWARD H. GRATIOT AND CHARLES L. GRATIOT, OF PLATTEVILLE,WlS. A

PATENT OFFICE. A

IMPROVEMENT IN WHEAT-STEIAMING APPARATUS.

Specification forming part of Letters Patent No. 174,360,- datedMarch.7, 1876; application filed I July 12,1875.

To all whom it may concern:

Be it known that we, EDWARD H. GRATIOT and CHARLES L. GRATIOT,bOl3l.10fPlatteville,

' in the county of Grant and State of Wisconsin steams or heats thewheat to properly prepare it to be ground. The wheat passes directlyfrom the steaming and heating apparatus to the millstopes.

()ur invention consists of two concentric coils of steam-pipes, havingan annular space.

between them,throughwhich the wheat passes, as hereinafter fullydescribed.

' The drawing is a central vertical section of our invention;

A represents the outer coil of steanrpipe. B represents the inner coil.made smaller in diameter atthe bottom than at the top, for the purposeof making the space, between the two coils gradually increase in widthfrom the top toward the bottom, to insure the free discharge of .thegrain. The two coils are braced to each other and supported in anysuitable manner. 0 is the hopper on the top of the coil A, into whichthe grain is poured. D is a conical cover on the inside. coil, whichcarries the grain into the space between the two coils. E is an. outsidemetal casing covering the coil or pipe. F is a pipe that conducts steaminto the apparatus.

G is an auxiliary pipe, which takessteam from the main supplypipeandconducts it into the inside coil,B. H is an auxiliary pipe, whichconducts steam from the supply-pipe into the perforated coil I at thetop of the outside coil with the wheat. the wheat, this auxiliary pipe His closed. The wheat is then heated fromthe other coils or The innercoil is.

A. J is an auxiliary pipe, which conducts steam from the supply-pipeinto the outside coil A. Each ot'these auxiliary pipes is provided witha cock, K, which can be opened and closed to control the passage of thesteam through them. 'L is a pipe for the exhaust or for the exit ofsteam from the apparatus. Each of the coils above described is connectedwith this exhaust-pipe L byImeans of a short auxiliary pipe. nished withcooks for the purpose of controlling the direction and exit of the steamand exhaust. It the wheat is too dry, and it is found desirable to steamit, the auxiliary pipe H is opened. This steam is admitted into theperforated pipe,'from which it escapes through the perforations directlyin contact If it is desirable to only heat pipe by radiated heat from,the steam within the coils.

As the wheat passes down the'space between the coils of pipe, it strikesagainst the separate layers of pipe, and is interrupted in its passage,and turned over and stirred, and

The combination, in a wheat-steaming apparatus, of the two concentriccoils of pipe A and B,as and for the purpose specified.

EDWARD H. GRATIOT. CHAS. L. GRATIOT.

' Witnesses:

HEINRICH F. BRUNS, J. L. (.lOBURN.

These auxiliar )i es are also fur- These coils of

